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+/********************* */
+/*! \file managed_ostreams.h
+ ** \verbatim
+ ** Original author: Tim King
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2016 New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Wrappers to handle memory management of ostreams.
+ **
+ ** This file contains wrappers to handle special cases of managing memory
+ ** related to ostreams.
+ **/
+
+#include "cvc4_private.h"
+
+#ifndef __CVC4__MANAGED_OSTREAMS_H
+#define __CVC4__MANAGED_OSTREAMS_H
+
+#include <ostream>
+
+#include "options/open_ostream.h"
+#include "smt/update_ostream.h"
+
+namespace CVC4 {
+
+/** This abstracts the management of ostream memory and initialization. */
+class ManagedOstream {
+ public:
+ /** Initially getManagedOstream() == NULL. */
+ ManagedOstream();
+ virtual ~ManagedOstream();
+
+ /** Returns the pointer to the managed ostream. */
+ std::ostream* getManagedOstream() const { return d_managed; }
+
+ /** Returns the name of the ostream geing managed. */
+ virtual const char* getName() const = 0;
+
+ /**
+ * Set opens a file with filename, initializes the stream.
+ * If the opened ostream is marked as managed, this calls manage(stream).
+ * If the opened ostream is not marked as managed, this calls manage(NULL).
+ */
+ void set(const std::string& filename);
+
+ /** If this is associated with an option, return the string value. */
+ virtual std::string defaultSource() { return ""; }
+
+ protected:
+
+ /**
+ * Opens an ostream using OstreamOpener with the name getName() with the
+ * special cases added by addSpecialCases().
+ */
+ std::pair<bool, std::ostream*> open(const std::string& filename) const;
+
+ /**
+ * Updates the value of managed pointer. Whenever this changes,
+ * beforeRelease() is called on the old value.
+ */
+ void manage(std::ostream* new_managed_value);
+
+ /** Initializes an output stream. Not necessarily managed. */
+ virtual void initialize(std::ostream* outStream) {}
+
+ /** Adds special cases to an ostreamopener. */
+ virtual void addSpecialCases(OstreamOpener* opener) const {}
+
+ private:
+ std::ostream* d_managed;
+}; /* class ManagedOstream */
+
+class SetToDefaultSourceListener : public Listener {
+ public:
+ SetToDefaultSourceListener(ManagedOstream* managedOstream)
+ : d_managedOstream(managedOstream){}
+
+ virtual void notify() {
+ d_managedOstream->set(d_managedOstream->defaultSource());
+ }
+
+ private:
+ ManagedOstream* d_managedOstream;
+};
+
+/**
+ * This controls the memory associated with --dump-to.
+ * This is is assumed to recieve a set whenever diagnosticChannelName
+ * is updated.
+ */
+class ManagedDumpOStream : public ManagedOstream {
+ public:
+ ManagedDumpOStream(){}
+ ~ManagedDumpOStream();
+
+ virtual const char* getName() const { return "dump-to"; }
+ virtual std::string defaultSource() const;
+
+ protected:
+ /** Initializes an output stream. Not necessarily managed. */
+ virtual void initialize(std::ostream* outStream);
+
+ /** Adds special cases to an ostreamopener. */
+ virtual void addSpecialCases(OstreamOpener* opener) const;
+};/* class ManagedDumpOStream */
+
+/**
+ * When d_managedRegularChannel is non-null, it owns the memory allocated
+ * with the regular-output-channel. This is set when
+ * options::regularChannelName is set.
+ */
+class ManagedRegularOutputChannel : public ManagedOstream {
+ public:
+ ManagedRegularOutputChannel(){}
+
+ /** Assumes Options are in scope. */
+ ~ManagedRegularOutputChannel();
+
+ virtual const char* getName() const { return "regular-output-channel"; }
+ virtual std::string defaultSource() const;
+
+ protected:
+ /** Initializes an output stream. Not necessarily managed. */
+ virtual void initialize(std::ostream* outStream);
+
+ /** Adds special cases to an ostreamopener. */
+ virtual void addSpecialCases(OstreamOpener* opener) const;
+};/* class ManagedRegularOutputChannel */
+
+
+/**
+ * This controls the memory associated with diagnostic-output-channel.
+ * This is is assumed to recieve a set whenever options::diagnosticChannelName
+ * is updated.
+ */
+class ManagedDiagnosticOutputChannel : public ManagedOstream {
+ public:
+ ManagedDiagnosticOutputChannel(){}
+
+ /** Assumes Options are in scope. */
+ ~ManagedDiagnosticOutputChannel();
+
+ virtual const char* getName() const { return "diagnostic-output-channel"; }
+ virtual std::string defaultSource() const;
+
+ protected:
+ /** Initializes an output stream. Not necessarily managed. */
+ virtual void initialize(std::ostream* outStream);
+
+ /** Adds special cases to an ostreamopener. */
+ virtual void addSpecialCases(OstreamOpener* opener) const;
+};/* class ManagedRegularOutputChannel */
+
+/** This controls the memory associated with replay-log. */
+class ManagedReplayLogOstream : public ManagedOstream {
+ public:
+ ManagedReplayLogOstream();
+ ~ManagedReplayLogOstream();
+
+ std::ostream* getReplayLog() const { return d_replayLog; }
+ virtual const char* getName() const { return "replay-log"; }
+ virtual std::string defaultSource() const;
+
+ protected:
+ /** Initializes an output stream. Not necessarily managed. */
+ virtual void initialize(std::ostream* outStream);
+
+ /** Adds special cases to an ostreamopener. */
+ virtual void addSpecialCases(OstreamOpener* opener) const;
+
+ private:
+ std::ostream* d_replayLog;
+};/* class ManagedRegularOutputChannel */
+
+}/* CVC4 namespace */
+
+#endif /* __CVC4__MANAGED_OSTREAMS_H */
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